Help modifying geotiff information

Started by salleman, March 04, 2020, 10:36:46 AM

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salleman

#15
March 04, 2020, 01:45:12 PM
I'm still not able to get what I need...

Is there a way to extract the projection information in ascii format, modify it to suit my needs, and re-inject it back into the tif file?

Also, can exiftool read projection information in from an ascii file created by listgeo?

salleman

#16
March 04, 2020, 01:48:27 PM
And does this error message from geotifcp mean anything to you?

test> G:\alleman\SSS_Geotif\geotifcp.exe -g SC_03.md SC_03.tif SC_03_fixed.tif                                                                                           
SC_03.tif: Warning, wrong data type 7 for "GeoKeyDirectory"; tag ignored.                                                                       
SC_03.tif: Warning, wrong data type 7 for "GeoDoubleParams"; tag ignored.                                                                       
Failure in GTIFImport                                                                                       

Phil Harvey

#17
March 04, 2020, 01:54:41 PM
Quote from: salleman on March 04, 2020, 01:45:12 PM
Is there a way to extract the projection information in ascii format, modify it to suit my needs, and re-inject it back into the tif file?

Yes.  Just read/write those tags normally. ie)

exiftool -pixelscale="0.0128746620000136 0.0120559770000436 1" -modeltiepoint="0 0 0 531697.611622669 4269956.09045799 0" FILE

QuoteAlso, can exiftool read projection information in from an ascii file created by listgeo?

Only if it is in a supported format (ie. json or xml)

Quote from: salleman on March 04, 2020, 01:48:27 PM
And does this error message from geotifcp mean anything to you?

test> G:\alleman\SSS_Geotif\geotifcp.exe -g SC_03.md SC_03.tif SC_03_fixed.tif                                                                                           
SC_03.tif: Warning, wrong data type 7 for "GeoKeyDirectory"; tag ignored.                                                                       
SC_03.tif: Warning, wrong data type 7 for "GeoDoubleParams"; tag ignored.                                                                       
Failure in GTIFImport                                                                                       

Yes.  See my post starting with "OK.  There is another difference that your output revealed:".

- Phil
...where DIR is the name of a directory/folder containing the images.  On Mac/Linux, use single quotes (') instead of double quotes (") around arguments containing a dollar sign ($).

salleman

#18
March 04, 2020, 02:11:58 PM
I think I misunderstood something.

Was I supposed to delete the geotiff tags from the file that I was fixing or the one that was more or less correct?

salleman

#19
March 04, 2020, 02:14:28 PM
so, I ran the command that you gave me to delete the tags, but I'm still getting the same errors...

I apologize for being a pest, but I need to get this data fixed as soon as possible.

Phil Harvey

#20
March 05, 2020, 07:32:25 AM
You were meant to delete the tags from the target file before copying.

You can use this command to see if the tags have the wrong format type:

exiftool -validate -warning -a FILE

But we still don't know if this is why GlobalMapper isn't recognizing the GeoTiff information.  Are you also setting the PixelScale and ModelTiePoint tags properly?

- Phil
...where DIR is the name of a directory/folder containing the images.  On Mac/Linux, use single quotes (') instead of double quotes (") around arguments containing a dollar sign ($).

salleman

#21
March 05, 2020, 08:53:02 AM
That's a good question, and not one I can really answer. The image files in question were generated by Chesapeake Technology SonarWiz... well, the ones that needed to be fixed were. I believe the one that I have with the correct projection information was generated by Blue Marble GlobalMapper.  I believe that file was pulled into GlobalMapper and re-exported with the correct projection information.

Deleting the tags from the target file didn't seem to do anything. When I copied the geo information from the good file, it ended up with the same results as before.

I'll run the validation right now. The first file "SC_04.tif" is after copying the geo data from SC_02_correctEPSG. The second file is SC_02_correctEPSG.tif.

/s/.../19031638_Orsted_SJW19_ENT/.../test $ exiftool -validate -warning -a SC_04.tif

Validate                        : 7 Warnings (5 minor)
Warning                         : [minor] Non-standard IFD0 tag 0x830e PixelScale
Warning                         : [minor] Non-standard IFD0 tag 0x8482 ModelTiePoint
Warning                         : [minor] Non-standard IFD0 tag 0x87af GeoTiffDirectory
Warning                         : [minor] Non-standard IFD0 tag 0x87b0 GeoTiffDoubleParams
Warning                         : [minor] Non-standard IFD0 tag 0x87b1 GeoTiffAsciiParams
Warning                         : Missing required IFD0 tag 0x011a XResolution
Warning                         : Missing required IFD0 tag 0x011b YResolution


/s/.../19031638_Orsted_SJW19_ENT/.../test $ exiftool -validate -warning -a SC_02_correctEPSG.tif

Validate                        : 5 Warnings (2 minor)
Warning                         : [minor] Non-standard IFD0 tag 0x830e PixelScale
Warning                         : [minor] Non-standard IFD0 tag 0x8482 ModelTiePoint
Warning                         : Missing required IFD0 tag 0x011a XResolution
Warning                         : Missing required IFD0 tag 0x011b YResolution
Warning                         : Invalid count for IFD0 tag 0x0140 ColorMap

Phil Harvey

#22
March 05, 2020, 08:56:36 AM
One obvious problem here... What version of ExifTool are you using?  You should update to the current version (11.90)

- Phil

Edit: Hmmm.  The output in your first post is from 11.90, but the output in your last post is from a much older version
...where DIR is the name of a directory/folder containing the images.  On Mac/Linux, use single quotes (') instead of double quotes (") around arguments containing a dollar sign ($).

salleman

#23
March 05, 2020, 09:24:26 AM
I appear to be running 10.8... I'll download the source and compile 11.9.

salleman

#24
March 05, 2020, 09:29:11 AM
It looks like the Ubuntu repository version is 10.8? Anyway, here's updated output.

/s/.../19031638_Orsted_SJW19_ENT/.../test $ /home/sja/Image-ExifTool-11.90/exiftool -validate -warning -a ./SC_02_correc
tEPSG.tif

Validate                        : 3 Warnings
Warning                         : Missing required TIFF IFD0 tag 0x011a XResolution
Warning                         : Missing required TIFF IFD0 tag 0x011b YResolution
Warning                         : Missing required TIFF IFD0 tag 0x0128 ResolutionUnit

/s/.../19031638_Orsted_SJW19_ENT/.../test $ /home/sja/Image-ExifTool-11.90/exiftool -validate -warning -a ./SC_02.tif

Validate                        : 5 Warnings
Warning                         : Non-standard format (undef) for IFD0 0x87af GeoTiffDirectory
Warning                         : Non-standard format (undef) for IFD0 0x87b0 GeoTiffDoubleParams
Warning                         : Missing required TIFF IFD0 tag 0x011a XResolution
Warning                         : Missing required TIFF IFD0 tag 0x011b YResolution
Warning                         : Missing required TIFF IFD0 tag 0x0128 ResolutionUnit

Phil Harvey

#25
March 05, 2020, 09:46:59 AM
Right, Wow, that's old.

OK, so now you have to repeat all your tests writing the GeoTiff tags using the current version.  That old version may not have been writing things correctly.

- Phil
...where DIR is the name of a directory/folder containing the images.  On Mac/Linux, use single quotes (') instead of double quotes (") around arguments containing a dollar sign ($).

salleman

#26
March 05, 2020, 10:27:00 AM
YAY!!!! So the whole problem was that I was using an outdated version of exiftool? Because I reran all the same commands and everything looks perfect! 8) 8) 8) 8) 8) 8) 8) 8) 8)

Phil Harvey

#27
March 05, 2020, 10:28:03 AM
Yes, that was likely the whole problem.  I do remember some fixes involving writing GeoTiff information, but that was a long while back and I can't recall the details.

- Phil
...where DIR is the name of a directory/folder containing the images.  On Mac/Linux, use single quotes (') instead of double quotes (") around arguments containing a dollar sign ($).
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